Abstract
AbstractThe fast charge‐transfer reaction of the polycrystalline Ag/Ag+‐electrode was studied using a new technique of high‐impedance spectroscopy working in the frequency range between 1 kHz and 5 MHz. The method is characterized by a special electrochemical cell with two working electrodes, a new designed de‐control being completely ac‐decoupled, a highly precise impedance measurement technique (ICEP = Impedance Conversion and Error Processing) and the quantitative calculation of the electrodynamic field distribution. The accuracy of the measurements is better than 0.05%. The results obtained in the Ag/Ag+‐system are in a quantitative agreement with a theoretical transfer function based on a 2‐D inhomogeneous surface model. The exchange current densities were found to be about half an order of magnitude higher than the literature data.
Published Version
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